Search for dissertations about: "adaptive mesh refinement"

Showing result 1 - 5 of 25 swedish dissertations containing the words adaptive mesh refinement.

  1. 1. Adaptive Mesh Refinement and Simulations of Unsteady Delta-Wing Aerodynamics

    University dissertation from Stockholm : Farkost och flyg

    Author : Yann Le Moigne; KTH.; [2004]
    Keywords : delta wing; high angle of attack; vortex; pitching; mesh refinement; UCAV; vortex sensor; tensor ofvelocity gradients;

    Abstract : This thesis deals with Computational Fluid Dynamics (CFD)simulations of the flow around delta wings at high angles ofattack. These triangular wings, mainly used in militaryaircraft designs, experience the formation of two vortices ontheir lee-side at large angles of attack. READ MORE

  2. 2. Adaptive methods in computational electromagnetics

    University dissertation from Chalmers University of Technology

    Author : Pär Ingelström; Chalmers tekniska högskola.; Chalmers University of Technology.; [2002]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; finite elements; finite-difference time-domain; hybris methods; mesh refinement; error estimation; Padé approximation;

    Abstract : .... READ MORE

  3. 3. Adaptive Solvers for High-Dimensional PDE Problems on Clusters of Multicore Processors

    University dissertation from Uppsala : Acta Universitatis Upsaliensis

    Author : Magnus Grandin; Uppsala universitet.; Uppsala universitet.; [2014]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; adaptive mesh refinement; anisotropic refinement; exponential integrators; Lanczos algorithm; hybrid parallelization; time-dependent Schrödinger equation; Scientific Computing; Beräkningsvetenskap;

    Abstract : Accurate numerical solution of time-dependent, high-dimensional partial differential equations (PDEs) usually requires efficient numerical techniques and massive-scale parallel computing. In this thesis, we implement and evaluate discretization schemes suited for PDEs of higher dimensionality, focusing on high order of accuracy and low computational cost. READ MORE

  4. 4. Iterative and Adaptive PDE Solvers for Shared Memory Architectures

    University dissertation from Uppsala : Acta Universitatis Upsaliensis

    Author : Henrik Löf; Uppsala universitet.; Uppsala universitet.; [2006]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; partial differential equations; iterative methods; finite elements; conjugate gradients; adaptive mesh refinement; multigrid; cc-NUMA; distributed shared memory; OpenMP; page migration; TLB shoot-down; bandwidth minimization; reverse Cuthill-McKee; migrate-on-next-touch; affinity; temporal locality; chip multiprocessors; CMP; Scientific Computing; Beräkningsvetenskap;

    Abstract : Scientific computing is used frequently in an increasing number of disciplines to accelerate scientific discovery. Many such computing problems involve the numerical solution of partial differential equations (PDE). READ MORE

  5. 5. Goal-Oriented Adaptive Finite Element Analysis in Computational Material Mechanics

    University dissertation from Chalmers University of Technology

    Author : Fredrik Larsson; Chalmers tekniska högskola.; Chalmers University of Technology.; [2003]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Teknisk mekanik; Engineering mechanics; FEM; a posteriori error estimation; adaptivity; mesh refinement; thermo-elasticity; elasticity; visco-plasticity;

    Abstract : This thesis is concerned with error control in computational material mechanics. A posteriori error estimation and adaptivity for finite element discretizations is investigated. Based on the technique of solving a dual problem, it is possible to control the accuracy of arbitrary quantities. READ MORE